Portable acetylene-lamp.



A. L. HANSEN.

PORTABLE ACETYLENE LAMP.

APPLICATION FILED MAY20.191I.

LWLQOQ. Patented Nov. 23, 1915.

COLUMBIA PLANOGRAPH 50. wnsnmo'roN. :1. c.

AUGIE L. HANSEN, OF EVANSTON, ILLINOIS, ASSIGNOR TO JUSTRITE MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

PORTABLE ACETYLENE-LAMP.

Application filed May 20, 1911.

To all whom it may concern: I

Be it known that I, Accra L. HANSEN, citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented certain newand useful Improvements in PortableAcetylene Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a simple and efieient miners acetylene gas lamp adapted to be worn upon the cap, and consists in the features of construction and combinations of parts hereinafter fully described and claimed.

In the accompanying drawings illustrating the invention: Figure 1- is a perspective view showing a miners cap equipped with an acetylene lamp constructed in accordance with my invention. Fig. -2 is a central vertical longitudinalsection of a lamp constructed in accordance with my invention showing the same mounted upon the lamp-carrying member of a miners cap, the latter being also shown in section. Fig. 3 is a fragmentary detail horizontal section on the line 33 of Fig.

My invention has for its particular object to provide an eflicient, economical miners lamp the water-chamber of which hasone wall constituting a reflector and through which the burner projects centrally.

A further object of the invention is to provide simple and eiiicient means for at: taching and detaching the gas generating member of the lamp from the water chamher and providing means for controlling the flow of water from the latter to the former.

A further object of the invention is to provide simple and eiiicient means for firmly attaching the lamp to a miners cap so as to prevent swaying of the same thereon or easy dislodgment therefrom.

Other objectsof the invention will ap pear from the following description.

The lamp comprises a carbid receptacle 1 open at its upper end and terminating at said end in a threaded neck 2 ofsmaller diameter than the lamp-body vand between which and said lamp-body an annular shoulder 3 is formed upon which the gasket 4 seats. The said lamp-body 1 is provided Specification of Letters Patent.

Patented Nov. 23, 1915.

Serial No. 628,576.

with an inverted dished bottom 5 provided centrally within said receptacle with an annular perforated flange 6 which is adapted to receive the lower end of a tube 7 which is provided with longitudinal slots 8 extendmg from said lower end thereof to a point ad]acent the upper end thereof. The said carbid receptacle 1 is adapted to be secured to a Water receptacle or chamber 9 which consists of a horizontally disposed cylinder having one end wall or head 10 forming a reliector for the jet of flame projected from the burner 11 which projects centrally from said head or reflector 10. The said cylinder 9 is equipped at one side with a threaded cap member 12 adapted to receive the threaded neck 3 ofthe carbid receptacle 1, the said cap member being provided at its outer end with an annular flaring flange 13 between which and said shoulder 3 the said gasket 4 'is adapted to be compressed to form a fluidtight joint between said carbid receptacle and said cap member. The said cap member is mounted in anopening in the circumferential wall of the cylinder 9 and secured by means of solder, or the like, to form a fluidtight joint therewith. The inner wall or head 14 of sa d cap member 12 is dished and presents a concave face to the interior of said cylinder 9. In said dished portion 1 1 of said head is a central opening which is surrounded by a small tube 15 soldered or otherwise secured and projecting outwardly therefrom and. through which water is adapted to pass from said cylinder 9 into the carbid receptacle 1. The said central opening in said dished head 14ris controlled by a valve 1b, the shank of which is enlarged and threaded at its upper end portion, as at 17 and is provided with a knurled head '18 by means of which said valve is turned. The said threaded portion 17 of said valve engages a threaded sleeve 19 mounted in the circumferential wall of the cylinder 9 diametrically opposite the said dished head 14- of the cap member, there being only about two threads on said enlarged portion of said valve so that the same may be easily disengaged from said sleeve and reciprocated. for purposes hereinafter set forth. A small red or wire 20 al ost equal in diameter to the inner diameter of the tube is secured to the lower end of said valve and passes through the said tube 15, being adapted to be reciprocated to keep the latter clear of obstructions to prevent interference withthe flow of water therethrough and serving also to so far choke said tube as to insure a very slight flow of water therethrough. Water is admittedto said cylinder 9 through the flanged opening 21 in the circumferential wall of the. cylinder 9 disposed adjacent said sleeve 19 and which is closed by means ofa screw cap 22 having a small opening therein through which air is admitted to said cylinder 9 or escapes therefrom. One end of a chain. 2 is secured in a suitable manner to said cap 22 and at its other end carries a bar 25 of greater lengththan the diameter of said flanged opening and is adapted to prevent the loss of said cap 22 when the latter is temporarily removed for the purpose of filling said receptaclet) with water.

The gas generated within the carbid receptacle 1 by contact of water with the contained carbid is adapted to pass through a tube '26 mounted at one end in an opening in the dished head 1% of said cap member 12 and passing at its other end through a central opening in the dished head or reflector 10 of said cylinder 9, said tube being secured with said respective openings by soldering or similar means. Filtering material, such as cotton indicated at 27, is disposed in the mouth of a tube 26 so that the gas passing into the tube from the receptacle 1 will be freed of solid particles which are frequently carried thereby.

'The miners cap 28, shown in Fig. -1, is provided with a visor 29 of a stiff materialtowhich is secured one flange 30 of a plate 31, the latter being equipped at its other end with a flange 32 secured by means .of rivets 33 to the crown of the cap 28. The

saidflange 32 is provided witha perforation 34 and-with a slot 35, the latter extending downwardly into thevplate 31. wall of the cylinder 9 there is secured a cross-bar 36"provided at its ends with flanges 37 which are bent between their ends to render them substantially Vshaped, the apeXes of the Vs thus formed opposing each other and beingseparated by a space of lesswidth thanthe plate 31 so that saidflanges may be sprung into engagement with said plate in a Well-known manner. A vertical bar '38 also secured to the rear wall of the cylinder 9.

fterminates at its upper end in a hook 39 which isprovided at itsfree end with a projection 10 adapted to be passed through'the said perforation 345, the body portion of the hook being adapted, after said projection i0 has been so passed through said opening and the lamp body then swung so as to engage the plate 31 between said flanges 37 of the Cross-bar36, to engage thewalls of the 'slot 35. The lamp when so mounted upon the cap is rigid therewith and incapable of movement in any direction relatively to the same.

On the rear" he operation of the lamp will doubtless be understood from the foregoing description but for purposes of convenience a brief description thereof will be given. The carbidchamber 1 is filled about one-half full of desiccated carbid and the water chamber 9 filled about one-half or two-thirds full of water, the valve 16 being closed at this time. The carbid receptacle 1 is then secured to the water chamber 9, as indicated, and then upon slightly opening said valve 10, water is admitted to the carbid receptacle 1 drop by drop. The drops of water admitted to the carbid receptacle fall upon the middle portion of the dished bottom 5 thereof and flow toward the outer circumferential wall of said receptacle through the perforations in the said annular flange (3 mounted upon the middle portion of said dished bottom thus coming into contact with the valve opening thus automatically shutting off such flow until the gas pressure has been reduced to a point less than sullicient to overcome the water pressure whereupon a further drop or drops will pass into said carbid receptacle thus generating further gas. The generated gas passes out through the tube 26 and burner 11. If at any time, the quantity of water admitted is so great as to cause an excessive generation of gas the resulting increase in pressure will cause said gas to escape partially through the valved opening into the water chamber whence it will pass out through the vent opening 23 in the cap 22.

In order to render the cleansing of the carbid chamber very convenient the tube 7 is rendered removable. The slotting of the lower end portion of said tube renders snug engagement of the same with the annular flange 6 possible, as will be obvious and serves to permit water to escape freely therefrom into contact with the carbid. At the same time said tube serves to prevent the slaked lime resulting from decomposition of head of the water chamber and is protected at its edges from contact with obstructions which generally, sooner or later, cause such reflectors to become loosened from the lamp body. The reflector is essential to the efficiency of the device for miners use as it concentrates a large proportion of the rays upon the point at which the miner is Working. Thus also the fastening means which I have provided are very advantageousin that they prevent the lamp from swinging relatively to the cap and thus insure concentration of the rays upon the desired point besides preventing the lamp from accidentally disengaging itself from the cap and dropping upon the floor Where injury to it is easily possible. My said lamp is very efficient and economical.

I claim as my invention:

1. In a device of the character described a horizontal water chamber of cylindrical form, one end of the said cylinder being a reflector, a thimble secured in the lower part of the cylindrical Wall having a closed concave top, threads rolled on its side wall, there being an opening in the center of said top and a carbid receptacle provided with threads which fit said first-named threads.

2. In an acetylene lamp, a reflector which constitutes an end wall of a horizontal cylindrical Water receptacle, the entire surface of which is in contact with water, a thimble secured to the lower part of the cylindrical Wall having a closed concave top, threads rolled on its side wall, there being an opening in the center of said top, and a carbid receptacle provided with threads which fit said first-named threads, the said threads extending up into the Water chamber.

3. In an acetylene lamp, a reflector which constitutes an end wall of a horizontal cylindrical water receptacle, the entire inner surface of which is in contact with water, there being a gas outlet located in the center of said end wall, and a tube leading therefrom to a gas chamber, the lower part of the cylindrical wall being formed With a circular hole, a thirnble secured therein having a closed concave top, threads rolled on its side wall, there being an opening in the center of said top and a carbid receptacle provided with threads which fit said first-named threads.

In testimony whereof I have signed my name in presence of tWo subscribing Witnesses.

AUGIE L. HANSEN.

Witnesses:

M. M. BOYLE, RUDOLPH WM. LoTz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

